Clamping device for demountable rims.



W. N. BGOTH.

ULAMPING DEVICE FOR DBMOUNTABLB RIMS APPLICATION FILED JULY 7, 1-913 Patented Mar. 23, 1915.

. lNITED STATES PATENT ()FFICE.

WILLIAM N. BOOTH, 0F DETROIT, MICHIGAN.

GLAMPING DEVICE FOR DEMOUNTABLE RIMS.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Appliczitlon filed July 7, 1913. Serial No. 777,640.

ounce m ii... I, \Vxntmn N. Boo'rn, United States. and resident in the county of Wayne and .llichigzin, have invented certain l linprmemeniis in Clamping lcni -uninhle Rims, of which 2 the hilhiiwiug to be a full. rriptiun, such as will ether: skilled in the art to which it (was i 2m n and use the same.

' in? t inrentien are to prfi firhlff attaching a dellze telly rim of an and the invention. has 7 to the construction and raping 3129:: s for securilt? rizn in place after it has he telly rim. These ire used in connection indium engaging surfaces and tell rims, and 21.

:me their clamping :fl' and ring will stay which they are placed ind cannot he e lciiv rim or i051 Alsn. iii prgnent a cmnpletc rna and are set t place the tin-y ll not interfere with h clnatunta 'le rim. Th y u l nth men! 1 n equalizing vp an their a? fling edges, by their exam; m-dliinns relative to w'unzplish these 0% lie itl 'ilfL mentioned rci l .."-i\ ml. and arranged i lnims.

flill'vlllif; drunings Figure 1 w 711m; wt it telly rim and detlnzreun, showing one of the r rinn. which is shown l;l-\- in chem at s, Fig F2 is :1V nif wne f the rirn r taining s is a rear vievr lluzrrnf: Fig. l waive View of 1 i pr nt; ring .rnn: Fig. 1: i r. neispentire l ving itii innrrllv turved 1 in retaining tninp n nes 9" r together: Fig 6 it idea levation at a. pin'tion on an en emobi e ill living cann ile of l eing- Wheel shuwing two rim retaining clamps in position.

In theseviews A is the Wheel felly, B is the felly rim which provided with an inwardly turned flange C, and with circumferential inclines D and E spaced apart upon the outer and inner edges, respectively.

I is the demonntahle rim provided with the circinnferential incline (7 upon its inner side at the inner edge corresponding to the incline E upon the felly rim, and also hav ing the reverse incline ll opposite the incline D upon the enter edge of the felly rim.

The inclines I l and it directly engage with each other and it double Wedge ring I engages the inclines D and H, the ring heing reversible fer convenience in use.

J is a clamp or clamping dog which is provided with an extended edge or toe K adapted to engage the wedge ring I and is rntatably secured to the inwardly turned llzinge C of the telly rim by means of a bolt l; which passes tl'nxwugh the flange and felly A. The clamp J is provided with a recess M Within which a, nut; N having a mar ginal flange O is inserted and the nut is screwed ripen the outer end of the bolt L. The enter mine all the M is turned inwardly at l t0 prevent the nut from escaping and a frictien Washer Q having an in- \vnrdl turned edge I; insures the easy m0veincnt (If the nut and hinge Within the cavity M. The bur-1r wall of the clamp is curved at R and the inner face of the nut is correspondingly curred at 1 to give a ball bearing fer the nut and permit the clamp to tilt slightly thereon.

A spring split washer S is secured between the llangnandv friction Washer, which provides a. sullicient and cnnstant pressure tn retain the clamp in position. in which it may he left when adjusting the tire and will remain in assembled position with out falling down when the wheel is turned around to adjustthe other clamps as when loosening the demeuntahle rim.

The clamps do not have to be removed from the fellv rim but are limited in movement when tnrned to pernit the removal of the demcnnta'nle rim by means of It stop or pin T upon the telly rim and 5 lug V upon the clamp.

To give freedom of movement to the extremity of the clamp Where it engages the Wedge ring, a mised ridge er heel U is provided at the opposite edge of the clamp where it engages the downwardly extending flange C of the felly rim, and to provide means for equalizing the pressure of the several clamps, and giving uniformity to their action, a washer of felt, leather, rubber, or similar resilient material is sleeved over .the bolt between the clamp and flange C. The thickness of all these washers is the same, and the clamps will all ress alike when engaging the Washers, anc an equal number of turns upon each nut will then in-- sure an equal amount of pressure upon each Cllllil).

The wedge ring I. is preferably double to increase the convenience of its use.

Having described the invention what I claim as new and desire to secure by Let tors Patent is:

1. In a device for clamping a demountable rim upon a felly rim, said felly rim having a flange on its outer edge, the combination with said rims, of a wedge ring engaging therewith, a bolt in said felly rim,

- a clamping dog therefor, said dog having a recess, a flanged nut in said recess, a spring washer in said recess engaging said flanged nut, and a resilient washer between said clamping dog and said flange on said felly rim.

2. In a device for securing a demountable rim to a felly rim, said rims having corresponding inclines, and said felly rim having an inwardly extending flange, a wedge ring engaging both said rims, a bolt in said flange on said folly rim, a clamping dog rotatable on said bolt, and having a heel adapted to engage said flange on said felly rim, and a toe engaging said wedge ring, said clamping dog provided with an annular recess, a nut upon said bolt having a flange inclosed within said recess, said nut having a rounded inner face, and said recess provided with a corresponding concaved rear wall.

In testimony whereof, I hereunto set my hand this 6th day of July, 1913.

WILLIAM N, BOOTH. 

